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    <title>Document</title>
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    <script>
        function Person() {}
        console.log(Person.prototype.constructor)
        console.log(Person.prototype.__proto__ === Object)
        var person = new Person()

        Person // 构造函数
        Person.prototype.constructor // Person, constructor存储了自身
        Person.prototype // 
        Person.prototype.__proto__ // Object.prototype
        Person.__proto__ // Function.prototype
        
    </script>
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